1290 , NEW YORK STATE MUSEUM 



PLATE 26 



Unknown Eurypterid 



Page 1105 



1 Imperfect arm. Natural size 



2 Group of arms and one body segment. Natural size 



4 Imperfect arm. Natural size 



Hughmilleria socialis sp. nov. 



Page 1091 



3 Female appendage of second sternite. Natural size 



5 Coxal joint of fourth endognathite, showing large perforation 

 of the upper side. x2 



